Grass sprinkler head guard



FIG. 1 is a front view of the grass sprinkler head guard.

FIG. 2 is a top view of the claimed design.

FIG. 3 is a bottom view of the claimed design; and,

FIG. 4 is a perspective view of the claimed design. 

CLAIM I claim the ornamental design for a grass sprinkler head guard, as shown and described. 